Here's a thing, first step in Valhalla, JEP401 Early Access 3: https://jdk.java.net/valhalla/ #OpenJDK #Java
Valhalla Early-Access Builds

...also (for reasons) prepping merge into master from 9 years of commits, is apparently non-trivial...

diff.renameLimit = 80000
git log ... over 90 minutes...